Right now
The most recent data we hold from NOAA arrived 48 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
15 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 24 September 2026 at 01:45 UTC. It is kept here as a record.
It is the 8th strongest of the 53 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 23 at 6:38PM EDT until September 23 at 9:45PM EDT by NWS Jackson KY
Nearby, since 16 March 2026
- September 23, 2026 · score 16 · 16.5 km
- September 23, 2026 · score 16 · 21.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Legacy data-support index | 0.60/1 |
| Coordinates | 37.3409, -82.7975 |
| Nearest City | Kingsport (90 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-23T22:38:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.ba33ecdc9a89dfc91958ea81c2cf19be85f7b4c6.001.1 |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-09-23T22:38:00.000Z.
First archived: 2026-09-23T22:45:03.328Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Martin, KY; Knott, KY; Letcher, KY; Perry, KY; Boone, WV; Lincoln, WV and 13 more areas |
| Headline | Flash Flood Warning issued September 23 at 6:38PM EDT until September 23 at 9:45PM EDT by NWS Jackson KY |
| Expires | 2026-09-23T21:45:00-04:00 |
| SenderName | NWS Jackson KY |
| HasExactCoords | true |
| MergedCount | 16 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ba33ecdc9a89dfc91958ea81c2cf19be85f7b4c6.001.1","noaa_urn:oid:2.49.0.1.840.0.e715821a833d1db7ce28021d79f2bd4c3d72fb35.001.1","noaa_urn:oid:2.49.0.1.840.0.6a0cbd371a65d46834e0a15f0072dd9ecba0141b.001.1","noaa_urn:oid:2.49.0.1.840.0.b1ba0a8ebff10c91ff36fcc9dc1756b2b613a7ad.001.1","noaa_urn:oid:2.49.0.1.840.0.6c773ec52e60f466886998a6f11c9e8ecd892237.001.1","noaa_urn:oid:2.49.0.1.840.0.3190972ef3a9f5c798ddb620bdd3839852bedc36.001.1","noaa_urn:oid:2.49.0.1.840.0.4639fabfc0e8caedbb064c0de07713a186f4a844.001.1","noaa_urn:oid:2.49.0.1.840.0.d581fdaf5bb92d37e54f57d134cdd7b242ad7252.002.1","noaa_urn:oid:2.49.0.1.840.0.371522f755ad78635dfa587ce74d783595fb7a51.001.1","noaa_urn:oid:2.49.0.1.840.0.4aa5351cbe6219817e747d571064da1632ef1aa3.001.1","noaa_urn:oid:2.49.0.1.840.0.482f6d6cc00b25b78bb09bd0c875a388343a5536.002.1","noaa_urn:oid:2.49.0.1.840.0.135e9e7055469281c3e37e7416952cd2de382a95.001.1","noaa_urn:oid:2.49.0.1.840.0.6dc1735c9384cb3c272b332e02ce7ce97fea0dfa.001.1","noaa_urn:oid:2.49.0.1.840.0.0e89402c248314e10d05437e37d692efbb8f388d.001.1","noaa_urn:oid:2.49.0.1.840.0.9a0d9b94de83eaab4aceadf0992661fd69297f0d.001.1","noaa_urn:oid:2.49.0.1.840.0.b7f4f909e7e28c40f2601d5765313a67793bc62f.001.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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